ASTM C 231a-2008 用压力法对新拌混凝土空气含量的标准试验方法

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【英文标准名称】:StandardTestMethodforAirContentofFreshlyMixedConcretebythePressureMethod
【原文标准名称】:用压力法对新拌混凝土空气含量的标准试验方法
【标准号】:ASTMC231a-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:空气;空气含量;混凝土;建筑;施工材料;含量测定;压力试验;测试
【英文主题词】:Air;Aircontent;Concretes;Construction;Constructionmaterials;Determinationofcontent;Pressuretests;Testing
【摘要】:
【中国标准分类号】:
【国际标准分类号】:91_100_30
【页数】:9P;A4
【正文语种】:英语


【英文标准名称】:OverheadelectricallinesexceedingAC45kV-Part1:Generalrequirements-Commonspecifications;GermanversionEN50341-1:2001+A1:2009
【原文标准名称】:交流电超过45KV的架空电线.第1部分:一般要求.通用规范.德文版本EN50341-1-2001+A1-2009
【标准号】:DINEN50341-1-2010
【标准状态】:现行
【国别】:德国
【发布日期】:2010-04
【实施或试行日期】:2010-04-01
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:气候条件;定义;设计;尺寸选定;距离;耐久性;接地电缆;接地;效应;电缆;导电体;电线;电气工程;电气设备;电绝缘;电性能;电性质和电现象;电气安全;环境条件;环境可持续性;安装;适用性;基础;总论;冰荷载;温度影响;绝缘件;绝缘子;寿命;极限载荷;极限(数学);线路柱形绝缘子;负载能力;负荷;维护;杆(柱);材料性能;材料;力学;开放线路架设;操作安全;架空电力导线;架空电力线装置;架空线;支撑点;铁塔;质量保证;可靠性;土力学;彼此间隔的;规范(验收);应力;结构工程;结构;电压;风荷载
【英文主题词】:Climaticcondition;Definitions;Design;Dimensioning;Distances;Durability;Earthcable;Earthing;Effects;Electriccables;Electricconductors;Electricalcords;Electricalengineering;Electricalequipment;Electricalinsulation;Electricalproperties;Electricalpropertiesandphenomena;Electricalsafety;Environmentalcondition;Environmentalsustainability;Erection;Fitnessforpurpose;Foundations;Generalsection;Iceloading;Influenceoftemperature;Insulations;Insulators;Life(durability);Limitloads;Limits(mathematics);Linepostinsulators;Loadability;Loading;Maintenance;Masts;Materialproperties;Materials;Mechanics;Openlineconstruction;Operationalsafety;Overheadlineconductors;Overheadpowerlineinstallations;Overheadpowerlines;Pointsofsupport;Pylons;Qualityassurance;Reliability;Soilmechanics;Spaced;Specification(approval);Stress;Structuralengineering;Structures;Voltage;Windloading
【摘要】:Thisstandardappliestooverheadelectriclineswithratedvoltagesexceeding45kVACandwithratedfrequenciesbelow100Hz.Thisstandardspecifiesthegeneralrequirementsthatshallbemetforthedesignandconstructionofnewoverheadlinestoensurethatthelineissuitableforitspurposewithregardtosafetyofpersons,maintenance,operationandenvironmentalconsiderations.
【中国标准分类号】:K47
【国际标准分类号】:29_240_20
【页数】:241P.;A4
【正文语种】:德语


【英文标准名称】:StandardPracticeforStaticCalibrationofElectronicTransducer-BasedPressureMeasurementSystemsforGeotechnicalPurposes
【原文标准名称】:土工用电子传感器型压力测量系统静态校准标准实施规程
【标准号】:ASTMD5720-1995(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1995
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D18.95
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:calibration;electronicequipment;instrumentation;manometer;pressuregauge;pressure-measuringinstrument;pressurestandard;pressuretransducer;sensor;Calibration--soil/rockanalysisinstrumentation;Electronicdevices/instruments/equipment;
【摘要】:Electronictransducer-basedpressuremeasurementsystemsmustbesubjectedtostaticcalibrationunderroomconditionstoensurereliableconversionfromsystemoutputtopressureduringuseinlaboratoryorinfieldapplications.Transducer-basedpressuremeasurementsystemsshouldbecalibratedbeforeinitialuseandatleastquarterlythereafterandafteranychangeintheelectronicormechanicalconfigurationofasystem.Transducer-basedpressuremeasurementsystemsshouldalsoberecalibratedifacomponentisdropped;overloaded;ifambienttestconditionschangesignificantly;orforanyothersignificantchangesinasystem.Staticcalibrationisnotappropriatefortransducerbasedsystemsusedunderoperatingenvironmentalconditionsinvolvingvibration,shock,oracceleration.1.1Thispracticecoverstheprocedureforstaticcalibrationofelectronictransducer-basedsystemsusedtomeasurefluidpressuresinlaboratoryorinfieldapplicationsassociatedwithgeotechnicaltesting.1.2Thispracticeisusedtodeterminetheaccuracyofelectronictransducer-basedpressuremeasurementsystemsoverthefullpressurerangeofthesystemoroveraspecifiedoperatingpressurerangewithinthefullpressurerange.1.3Thispracticemayalsobeusedtodeterminearelationshipbetweenpressuretransducersystemoutputandappliedpressureforuseinconvertingfromonevaluetotheother(calibrationcurve).Thisrelationshipforelectronicpressuretransducersystemsisusuallylinearandmaybereducedtotheformofacalibrationfactororalinearcalibrationequation.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Theinch-poundunitsinparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection7.
【中国标准分类号】:L15
【国际标准分类号】:17_100
【页数】:9P.;A4
【正文语种】:英语